Grin ding-machine



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GRINDING MACHINE.

Patented Jam.v 8,; 1884.

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J. H. REED.

y GRINDING MACHINE., No. 291,537. Y Patented Jan. 8, 1884.

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JAMES H.` REED, OF BROOKLYN, NEWv YORK.

GRlNDlNG-NIACHINE.

SPECIFICATION forming part of` Letters Patent `No. 291,537, datedJanuary 8, 1884.`

I Application filed May 10. 1883. (Xo model.)

To all whom it may concern:

Beit known that I,` JAMES H. REED, of the city of Brooklyn, county ofKings, State of y Glass or other Materials, of which the following is aspecication. Y

`This invention relates to that class of machines called grindingmachines;V and it has for its object improvements in the construction ofsame, whereby the edges of the material to be ground can be adjustedmore readily and with greater precision to the stone or mill than by anyother device.

To describe myinvention more fully, so that those skilled in the art canunderstand the same, I will now refer to the accompanying drawings, ofwhich-. j

Figure lv` is a sideelevation of grindinginachine, showing myimprovements. Fig. 2is a plan view of same. Fig. 3 is a sectional viewon line r fr, showing tablein another position.

c represents the horizontal stone or metal-` lic mill, supported inframe c', driven by pul y ley c2, by which the edge or beveled edge ofthe glass or other material is ground. In the use of the metallic millssand or other abradin g substances are used.

b b' are the rails or ways fastened to the frames ccci, on which thecarriage d, supported by the grooved wheels d d2 cl3 d", move backwardand forward freely the length of the ways b b.

Pivoted to the carriage d by means of the adjustable centers e e is thetable f, controlled and kept in position by the levers g g, `fasti enedto the carriage d at the points h h and to i brackets it.

the under side of the table' f by means of the The table fis raised orlowered by means of the curved racks j j', pivoted to the under side ofthe table f at the points k It, and the pinions ZZ', fastened to theshaft mi, working in the bearings an on the carriage d. The racks j j'are held ingear to the pinions ZZ by means of guides or braces cned tothe carriage d.

to the angle desired. The hand-wheel is firmly clamped by means of theclamp q, which is held rigidly to the carriage d by the hand` screw r,by which means the table f is firmly held and easily adjusted at anydesired angle.

tries s s', which work in straps t t', the eccen-V trics s s beingfastened firmly to shaft u, which works in bearings fu e', fastened tothe carriage d. The shaft a is worked by means of the hand wheel w,which is secured to same. When the table f is adjusted to the requiredposition, by turning the shaft a by means of 65 the hand-wheel w, it isfirmly held in place by the clamp y, which is rigidly held to thecarriage d by means of the hand-screw z. The carriage d and the frame ofthe table f are formed by T or angle iron, either wrought or cast, andfirmly bolted or riveted together for the purpose of constructing sameaslightly as possible. The table f is formed by securely fastening to theframe wood, which is covered with felt, so that' the glass plates orother materials may not be broken or scratched by clamping same to thetable. Then the glass or other material is clamped to the table f bymeans of screw-clamps or other devices for firmly holding the same, thetable then is raised by turning the shaft m, upon which are the pinionsZ Z, engaging into the racks j j', as

nearly as possible to the required height, to

glass coming in contact with the revolving stone or mill. The edge isground away until the desired bevel is obtained, the table f beinglowered by means of the racks j j and the eccentrics s s as the glass iscut or ground away.

The construction of the adjustable table with the racks an d eccentricsalso enables the height of the table to belowered as the stone or millwears away. Y i

Having now described my invention, what i Upon the shaft m isahand-wheel, p, for the 5o purpose of working shaft m in direction asmay 4 be required when table f is raised or lowered I claim, and desireto secure by Letters Patent, Ioo isy 1 1 ln combination, the table f,the eccentries 8.8', straps t t, hand-Wheel 'w and clamp racks j j',with pinions Z Z, hand-wheel p, and y, the raeksjj, p'inions Z Z,hand-Wheel p, and clamp q, substantially as and for the purpose clamp q,and levers g g', and brackets fi i', snbset forth. stantiztlly as andfor the purpose set forth. In testimony whereof I have hereunto set 5 2.In combina-tion, the table f, the eceenmy hand at New York, 4county andStat-e of 15 tries s s, stra-ps t t', the racks j y, and pinions NewYork. v Z Z, and levers g g', and brackets 13 vl, substan- JAMES H.REED. tially as and for the purpose herein set forth. Witnesses:

3. In combination, table j, the eecentrcs s II. D. WILLIAMS, 1o s',straps 't 1f', hand-wheel fw, and clamp y, and VILLIAM SHEDLOCK.

